Books published by publisher Crabtree Publishing Company

"Fun pictograms and infographics about planet Earth make learning about math topics such as volume, scale diagrams, division, and number lines easy and fun. In this book, readers go on a mission to protect threatened areas around the world and use their mathematical skills to measure geysers, protect forests, and check on glaciers. Math puzzles and exercises help children build confidence in their math skills."--

Some Archaea thrive in extreme places around the planet such as in thermal pools, hot vents at the bottom of the sea, extremely salty water, and even in underground oil reserves. Others are found in the intestines of animals and in plankton, tiny organisms that form a feeding reserve for larger marine life. Once grouped with bacteria, the DNA of this fascinating group is sufficiently different that scientists have proposed that they should have a sixth kingdom of their own. This book examines the three main divisions into which members of the diverse Archaea kingdom are grouped according to their unusual biology. It also explains why little in general is known about them, and why further classification of Archaea is so difficult.

For all the little makers and inventors comes a STEAM-infused tale of determination, ingenuity, and friendship starring a feisty, diverse female engineer. “This story of a girl engineer is sorely needed and has potential to develop and nourish readers’ interest in STEAM subjects.” ―Kirkus ReviewsIzzy Gizmo’s inventions are marvelous, magnificent . . . and often malfunction. Despite the fact that she loves to invent, it never seems to work out in her favor. But when she finds a crow with a broken wing, she has to help! Izzy tries again and again to build a new pair of wings, but nothing is working. Can Izzy overcome her failures? Or is her friend destined to live as a crow who can’t fly?From author Pip Jones, this inspiring story of creativity and perseverance in the face of failure showcases a sweet friendship and is illustrated with bright, zany art from the acclaimed Sara Ogilvie.Also available: Izzy Gizmo and the Invention ConventionActivity Sheets and Teacher’s Guide available!Parents’ Choice Fun Stuff Award – Parents’ Choice Foundation

Black Tuesday and the Great Depression explores the causes of the stock market crash in 1929 and the resulting Great Depression. For more than ten years the effects of October 29, 1929, known as Black Tuesday, were felt not only in North America, but worldwide. Source material, including posters, political cartoons, books, interviews, and articles show the devastation of the resulting mass unemployment, epidemic real estate foreclosures, and crushing poverty of those years.

This work is suitable for children aged 7-14. This fascinating new book explores the wonders of seals and sea lions, known as pinnipeds which means fin-footed. Beautiful full-colour photographs and captivating text introduce children to the bodies, behaviours, and habitats of these incredible creatures that live both on land and in water. A must-sea book for fans of marine mammals, children will discover: where seals and sea lions live; how they swim and dive in water; how they hunt and what they eat; dangers to seals and sea lions.

"Fun pictograms and infographics about the natural and human-made wonders of the world make learning about math topics easy and fun. In this book, readers go on a mission to explore these wonders and use their mathematical skills at such sites as the pyramids of Egypt, the Great Wall of China, Mount Everest, and the Galapagos Islands. Math puzzles and exercises help children build confidence in their math skills"--

"Fun pictograms and infographics about the oceans make learning about math topics easy and fun. In this book, readers go on a mission deep underwater and use their mathematical skills while learning about scuba diving and submarines, and exploring life in coral reefs, deep ocean waters, and underwater volcanoes. Math puzzles and exercises help children build confidence in their math skills."--

In a fiery tale filled with villains and heroes, this first installment of the Earth Angel series takes readers on a magical journey rich with emotion, intrigue, and danger. Fans of Twilight, The Red Queen, The Selection, and Harry Potter will devour this breathless fantasy set in a modern mystical world.It all starts with a letter . . . Eighteen-year-old Layla Callaway doesn’t believe in magic or soul mates. And if angels were real, her mother would still be alive. But her mom’s dead and a surprise inheritance is about to change everything.The Earth Angel series is a young adult adaptation of The Mystic Series by B.C. Burgess.

Madeline Finn does NOT like to read. But she DOES want a gold star from her teacher. But, stars are for good readers. Stars are for understanding words, and for saying them out loud.Fortunately, Madeline Finn meets Bonnie, a library dog. Reading out loud to Bonnie isn’t so bad; when Madeline Finn gets stuck, Bonnie doesn’t mind. As it turns out, it’s fun to read when you’re not afraid of making mistakes. Bonnie teaches Madeline Finn that it’s okay to go slow. And to keep trying.With endearing illustrations, Lisa Papp brings an inspiring and comforting book to all new readers who just need a little confidence to overcome their fears.

Children will love the entertaining photos in this book, which feature animals in motionwalking, running, climbing, crawling, swinging, hanging by their tails, gliding, fluttering, hopping, pouncing, and yes, even dancing. They will also be amazed by the way animals without legs movesliding on mucus, slithering, and swimming. An activity asks children to write down all the ways they move in one day.